Knife Changing Patents (Class 83/954)
  • Patent number: 8187157
    Abstract: A microtome blade changing apparatus for a knife holder (1) of a microtome comprises a blade dispenser (4) storing unused blades and a blade container (5) for receiving used blades. The blade dispenser (4) and blade container (5) are respectively arranged adjacent to the knife holder (1). To reduce the risk of injury to an operator in the context of a blade changing operation, enable operation of the microtome blade changing apparatus reliably and in simple fashion, and allow economical manufacture of the microtome blade changing apparatus, the microtome blade changing apparatus is characterized in that an entraining element (13) manually actuable by an operator is provided, and is configured in such a way that an unused blade is transferable with the entraining element (13) from the blade dispenser (4) to the knife holder (1), and a used blade is thereby conveyable into the blade container (5).
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: May 29, 2012
    Assignee: Leica Biosystems Nussloch GmbH
    Inventors: Stefan Thiem, Rolf Metzner, Christoph Schmitt
  • Patent number: 8182404
    Abstract: The invention provides for the replacement of the cutting plate (15) and the press die (16) to be carried out automatically, specifically with the aid of a positioning device for positioning the stack of printed sheets (11) to be trimmed under the press die (16). In this way, the automatic conversion of the automatic three-knife trimmer for a format change is possible without a significant change to the automatic three-knife trimmer. Only the control system of the positioning device has to be changed and expanded. The positioning device (21) automatically ensures that the new press die (16) and the new cutting plate (15) are positioned exactly. In particular, the positioning of the die plate (19) under the format plate (18) can be carried out automatically by means of the positioning device with the required high accuracy, to be specific with higher accuracy than would be possible manually.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: May 22, 2012
    Assignee: Wohlenberg Buchbindesysteme GmbH
    Inventors: Rolf Hansmann, Andreas Lange, Bernd Lustermann
  • Patent number: 8151681
    Abstract: An endless rotation hoop knife for a splitting machine including a front end embodied as a cutting edge and at least two openings for accommodating retaining members. The invention also discloses a transport device for a rotation hoop knife, including a housing and at least two retaining members which are configured to engage in openings in the rotation hoop knife. The invention further relates to methods for safe mounting and dismantling of a rotation hoop knife, in particular of a sharp rotation hoop knife. Due to the rotation hoop knife being provided with openings for accommodating retaining members, it is now possible for the rotation hoop knife by to be held by retaining members which engage the openings. In this way, when the rotation hoop knife is released on the splitting machine, the rotation hoop knife is reliably held by the retaining members which engage the openings.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: April 10, 2012
    Assignee: Fortuna Spezialmaschinen GmbH
    Inventors: Hans Lassnig, Markus Hoffmann
  • Patent number: 8042444
    Abstract: A knife holder (1) for microtome blades (2) has a body (3) for reception of the blade (2) against an abutment edge (4) and a pressure plate (5) for retention of the blade, such that in the retained state, only the blade cutting edge (6) protrudes from the body (3), and an ejection apparatus (8), associated with one side edge (7) of the blade cutting edge (6), is connected to the body (3).
    Type: Grant
    Filed: October 15, 2005
    Date of Patent: October 25, 2011
    Assignee: Leica Biosystems Nussloch GmbH
    Inventor: Stefan Thiem
  • Patent number: 7832319
    Abstract: A blade clamp assembly for retaining a rotary blade on the arbor of a rotary tool includes a blade washer for engaging the blade to hold the blade on the arbor and a clamp assembly threaded into the arbor to clamp the blade washer against the blade. The clamp assembly includes a planetary gear system for transmitting torque applied to the clamp assembly to the blade washer, wherein the planetary gear system multiplies the torque transmitted to the blade washer so that the torque transmitted to the blade washer is greater than the torque applied to the clamp assembly.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: November 16, 2010
    Assignee: Black & Decker Inc.
    Inventors: Alan Phillips, John W. Schnell
  • Patent number: 7343841
    Abstract: A blade clamp assembly for retaining a rotary blade on the arbor of a rotary tool includes a blade washer for engaging the blade to hold the blade on the arbor and a clamp assembly threaded into the arbor to clamp the blade washer against the blade. The clamp assembly includes a planetary gear system for transmitting torque applied to the clamp assembly to the blade washer, wherein the planetary gear system multiplies the torque transmitted to the blade washer so that the torque transmitted to the blade washer is greater than the torque applied to the clamp assembly.
    Type: Grant
    Filed: October 16, 2003
    Date of Patent: March 18, 2008
    Assignee: Black & Decker Inc.
    Inventors: Alan Phillips, John W. Schnell
  • Patent number: 7299726
    Abstract: A method and unit for transversely cutting cigarette portions or similar on a filter assembly machine, whereby a cigarette portion is fed transversely through a cutting station to intercept a rotary circular blade, which is maintained in a work position by an arm mounted to oscillate about an axis parallel to the axis of rotation of the circular blade, so as to move the circular blade between the work position, a store for worn circular blades, and a store for new circular blades.
    Type: Grant
    Filed: November 17, 2004
    Date of Patent: November 27, 2007
    Assignee: G.D Societa' per Azioni
    Inventors: Salvatore Rizzoli, Stefano Balotta, Fiorenzo Draghetti
  • Patent number: 7146894
    Abstract: An automated rotary microtome blade changing apparatus, comprising an upper stage being adapted to releasably engage a supply cartridge and a waste cartridge, the upper stage having a loading segment adapted to engage and move blades contained within the supply cartridge into a cutting position; clamping means for releasably holding the blades in place for cutting operations; power means for driving the movement of blades and clamping mechanisms; and electronic control means for integrating all of the functions of the apparatus.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: December 12, 2006
    Assignee: Ventana Medical Systems, Inc.
    Inventors: Kendall B. Hendrick, Darin McDaniel, Miroslav Holubec, William Richards, Vincent Rizzo
  • Patent number: 7011007
    Abstract: In an apparatus for cutting pattern pieces and creating apertures in sheet-type work material a frame has a support surface mounted thereon for carrying at least one layer of the work material. A carriage is coupled to the frame for movement back-and-forth there along a first coordinate direction in response to commands issued from a controller. A cutting head is mounted to the carriage and moves in a second coordinate direction along the carriage approximately perpendicular to the first coordinate direction. A rotary die is coupled to the cutting head and at least one cutting tool is mounted to the rotary die. The cutting tool includes a shaped cutting portion corresponding to the shape of an aperture to be formed in the work material. During operation the rotary die is movable between a working position wherein the cutting tool engages the work material and a non-working position wherein the rotary die is positioned away from the work material.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: March 14, 2006
    Assignee: Gerber Technology, Inc.
    Inventor: Darryl C. Stein
  • Patent number: 6918332
    Abstract: A paper punch device includes an elongate base having a first end, a second end, a top side and a length greater than nine inches. A compartment is positioned within the base. An aperture positioned adjacent to the first end extends through the top side into the compartment. An engaging arm is elongated and has rearward end and a forward end. The rearward end is pivotally coupled to the top side adjacent to the second end and the engaging arm extends over the aperture. A piston extends through and is movably mounted in the engaging arm. The piston includes a lower portion that may selectively be extended through the aperture. A first biasing member biases the lower portion upwardly away from the base. An actuator selectively moves the lower portion of the piston downward and into the aperture.
    Type: Grant
    Filed: December 1, 2003
    Date of Patent: July 19, 2005
    Inventor: Gaynelle Andersen
  • Patent number: 6742424
    Abstract: An apparatus for cutting green ceramic bodies, includes a traveling path for green ceramic bodies, beds for supporting green ceramic bodies at constant intervals in series along the traveling path, an arm on each side of the traveling path, two drive portions for moving respective arms perpendicularly relative to the traveling path, a drive portion for moving both arms in the same direction as the traveling path, a wire for cutting green ceramic bodies, extending between the arms, and wire supporting portions, on respective arms. Each wire supporting portion includes a servo motor with an axis of rotation, a magnet member around the axis of rotation, a bobbin having a conical surface around which wire is wound, and magnetically coupled to the axis of rotation by the magnet member, and a traversing mechanism for varying the position where the wire is wound around the length of the conical surface.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: June 1, 2004
    Assignee: NGK Insulators, Ltd.
    Inventors: Ken Fukuta, Yuji Ueda, Satoshi Sugiyama
  • Patent number: 6732622
    Abstract: The present invention relates to a manual vegetable cutter, for selectively varied cutting. Furthermore, the cutter of the present invention does not expose the user to risks of serious cuts. The cutter comprises a frame fitted with at least one cutting blade mounted transversely facing a slot through which the cut vegetables pass and also two side rails providing guidance in to and fro translational motion for a guide chamber equipped with a loading volume for the vegetables to be cut up and acting in conjunction with a press-down cap which the user grips in order to move the guide chamber to and fro along the guide rails while constantly exerting pressure on the vegetables contained in the loading volume so that they are pressed against the cutting blade or blades fitted to the frame and can be cut up by the blade or blades.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: May 11, 2004
    Assignee: DeBuyer
    Inventor: Jacques Vincent
  • Patent number: 6729220
    Abstract: A spring loaded diamond shaped arbor for use in a saw blade. The arbor includes comprised of a diamond shaped plate having four peripheral side walls with four corners therebetween that separate the four side walls. The arbor has a central opening that is configured and adapted to allow the arbor to be attached to a power tool. A slot extends from the central opening through one of the side walls or corners so that the arbor can easily be inserted into and removed from a saw blade. The slot allows the arbor to be compressed like a spring and be retained within the central opening in the saw blade.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: May 4, 2004
    Assignee: Black & Decker Inc.
    Inventors: John Curtsinger, Johnny Hortenbury
  • Patent number: 6679147
    Abstract: A punch retainer system includes one or more punch retainers that are selectively insertable into a retainer block. The punch retainers are dimensioned such that they can be positioned closely together and thereby allow punches to be arranged in a closely positioned arrangement. The punch retainers are insertable into a retainer block which includes recesses dimensioned to receive the punch retainers. The recesses are custom-cut in the desired arrangement by the tool and die shop. After insertion of the punch retainers into the retainer block, the punch retainer and retainer block assembly is secured to a die shoe. The punch retainers may include a releasable lock for selectively securing the punches in the punch retainers.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: January 20, 2004
    Inventor: Michael J. Chaulklin
  • Publication number: 20030188611
    Abstract: A slitter knife system for facilitating efficient changing of cutting knives upon a slitting machine. The slitter knife system includes a main housing, a chuck housing movably positioned within the main housing, a plunger member movably positioned within the chuck housing, an arbor member rotatably attached about a portion of the chuck housing for receiving an upper knife, a clamp member positioned adjacent the upper knife, and an outer bearing attached to a distal portion of the plunger member. Utilizing a source of air pressure, a user is able to draw the plunger member inwardly so that the outer bearing forces the clamp member tightly against the upper knife. When replacement of the upper knife is required, the user releases the air pressure and a spring engaging the plunger member forces the same outwardly to allow for removal of the clamp member thereby providing unobstructed access to the upper knife.
    Type: Application
    Filed: April 4, 2002
    Publication date: October 9, 2003
    Inventor: Gary I. Solberg
  • Patent number: 6622602
    Abstract: A device (1) is provided for slicing loaves and similar bakery products. The device includes a stationary frame (2) including a support (4, 5) for supporting the loaves or bakery products. A blade carrier (10) holds a plurality of thin elongate cutting blades (11) at spaced locations with respect to one another. Each blade includes a cutting edge (13) for cutting the loaves or bakery products. The device includes a blade carrier drive (51-56, 65-68) which provides for first and second movement of the blade carrier. A cleaning mechanism (70, 71) is provided for cleaning the cutting blades.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: September 23, 2003
    Assignee: Rompa Patent Beheer B.V.
    Inventor: Jozef J. Th. Rompa
  • Patent number: 6568306
    Abstract: A punching unit for punching holes of a selected geometry in a wall of a component. The punching unit has a frame for supporting the component and the tool and die assembly releaseably securable to the frame. Tool and die assembly has a punch operatively coupled to a mandrel and a male die member and a female die member cooperating to form the hole in the wall. A portion of the tool and die assembly is interchangeable to provide a selected one of a plurality of predetermined hole geometries for the component.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: May 27, 2003
    Inventor: John William White
  • Patent number: 6520061
    Abstract: An apparatus for cutting green ceramic bodies, includes a traveling path for green ceramic bodies, beds for supporting green ceramic bodies at constant intervals in series along the traveling path, an arm on each side of the traveling path, two drive portions for moving respective arms perpendicularly relative to the traveling path, a drive portion for moving both arms in the same direction as the traveling path, a wire for cutting green ceramic bodies, extending between the arms, and wire supporting portions, on respective arms. Each wire supporting portion includes a servo motor with an axis of rotation, a magnet member around the axis of rotation, a bobbin having a conical surface around which wire is wound, and magnetically coupled to the axis of rotation by the magnet member, and a traversing mechanism for varying the position where the wire is wound around the length of the conical surface.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: February 18, 2003
    Assignee: NGK Insulators, Ltd.
    Inventors: Ken Fukuta, Yuji Ueda, Satoshi Sugiyama
  • Publication number: 20020005104
    Abstract: An automated rotary microtome blade changing apparatus, comprising an upper stage being adapted to releasably engage a supply cartridge and a waste cartridge, the upper stage having a loading segment adapted to engage and move blades contained within the supply cartridge into a cutting position; clamping means for releasably holding the blades in place for cutting operations; power means for driving the movement of blades and clamping mechanisms; and electronic control means for integrating all of the functions of the apparatus.
    Type: Application
    Filed: April 27, 2001
    Publication date: January 17, 2002
    Inventors: Kendall B. Hendrick, Darin McDaniel, Miroslav Holubec, William Richards, Vincent Rizzo
  • Patent number: 6325127
    Abstract: An ultrasonic seam welding apparatus for seam welding at least two sheetlike work pieces piled one above the other by imparting ultrasonic osculation is expressed through the ultrasonic binding and cutting quill assembly. The ultrasound seaming and cutting apparatus comprises a receptive resonant horn or wheel for receiving a rotating anvil wheel and a cutting surface thereon. An apparatus and receiving component having overlapping surfaces and welding the components together with the use of ultrasound. An ultrasound emitter and wheel receives the high frequency current and converts it into mechanical ultrasonic vibrations having the same frequency.
    Type: Grant
    Filed: January 12, 1999
    Date of Patent: December 4, 2001
    Assignee: Kappler Protective Apparel & Fabrics
    Inventor: Randy Mac Waldrop
  • Publication number: 20010042426
    Abstract: The machine controlled by the device comprises a set of cutting tools interchangeable in dependence on the blank to be cut, means adjustable in dependence on the jobs to be performed by each tool, and means for actuating the adjustable means. The control device comprises a memory (1) associated with each cutting tool in order to store the data relating to the characteristics of the tool and of the operations for adjusting the machine (5) in order to use the tool, reading means (2) for reading the data in the said memory, means (3) for displaying a menu relating to the data and control means (4) for generating and transmitting control signals (6, 7, 8) to the actuating means in dependence on the menu.
    Type: Application
    Filed: May 14, 2001
    Publication date: November 22, 2001
    Applicant: Bobst S.A.
    Inventor: Marc Nicole
  • Patent number: 6269723
    Abstract: A punch guide/receptacle for a dambar-removal tool set has a mounting fixture and an insert adapted to mount to an adaptive region of the mounting fixture. Apertures for punch teeth in the guide/receptacle are a part of the insert. In practicing the invention inserts may be removed and repaired. In one embodiment the insert has an upper and a lower row of apertures, and repair may be accomplished in some instances simply by reversing the insert in the mounting block.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: August 7, 2001
    Assignee: Integrated Packaging Assembly Corporation
    Inventor: Ee Chang Ong
  • Patent number: 6244149
    Abstract: A machine tool has a work table which defines a working surface and has a cutting tool which is attached to and movable with respect to the work table. The cutting tool extends through a removable throat plate. An integral arbor wrench is provided which is accessible when the throat plate is removed. The wrench is designed to engage the arbor shaft to facilitate tool changing by preventing rotation of the arbor shaft. The wrench is also designed to not allow reassembling of the throat plate when the wrench is in engagement with the arbor shaft.
    Type: Grant
    Filed: October 27, 1998
    Date of Patent: June 12, 2001
    Assignee: Black & Decker Inc.
    Inventors: Warren A. Ceroll, Frederick R. Bean, Maria I. Kenyon, James R. Parks, Robert S. Gehret, David A. Porter, Michael L. O'Banion, Daniel Puzio, Kevin Brewer
  • Patent number: 6233809
    Abstract: A cutting knife assembly has a baseboard with a generally planar surface. A cutting knife is detachably connected to the baseboard. The cutting knife extends in a perpendicular direction to the baseboard. The cutting knife circumscribes a knife cavity on the baseboard. At least one elongated cross member is affixed to the cutting knife and extends across the knife cavity. The cross member is mounted to the baseboard by a removable fastener. The cutting knife may then be easily removed from the baseboard and resecured.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: May 22, 2001
    Assignee: Ontario Die Company Limited
    Inventors: Michael R. Geffros, Gary S. Levene
  • Patent number: 6138546
    Abstract: A hand operated cutting apparatus and method of cutting mat board, glass, and other related sheet-like framing material. The apparatus has a cutting head assembly which includes a plurality of interchangeable and adjustable blade holding units. Each blade holding unit provides a different type of cut, such as a beveled, straight edge, or V-groove cut. Most of the blade holding units are intended for use with mat board, but some can be used to cut and trim sheet-like glass or plastic framing material. Each blade holding unit is also capable of vertical adjustment relative to the workpiece so that various depths of cut can be provided. The method of cutting a mat board permits the mat board to be positioned face up on the base board of the cutting apparatus and does not require flipping or taping of the mat board during V-groove cutting operations.
    Type: Grant
    Filed: January 14, 1999
    Date of Patent: October 31, 2000
    Assignee: John Knoell & Sons, Inc.
    Inventor: William A. Hursey
  • Patent number: 6132348
    Abstract: A method of adjusting a blade (12) in its lowermost position while replacing a used one in a machine for cutting paper, cardboard, and similar stock. The blade is loosely attached to a blade holder that travels up and down. The blade can be loosened from the holder and raised and lowered therein. With the blade holder down, the blade can be adjusted by lowering it against at least one support (19 or 20) at the level of the stock being cut.The backing strip is removed from the stock-positioning board. The support is advanced out of a disengaged position and into an engaged, blade-adjustment, position. The blade holder, accommodating the blade loose in its raised position, is lowered into its lowermost position. The blade is lowered onto the support in its engaged position and secured tight to the blade holder in that position. The blade holder is raised. The support is returned into its disengaged position. The backing strip is replaced in the stock-positioning board.
    Type: Grant
    Filed: January 14, 1999
    Date of Patent: October 17, 2000
    Assignee: Adolf Mohr Maschinenfabrik GmbH & Co. KG
    Inventors: Helmut Gross, Adolf Rasch
  • Patent number: 6123004
    Abstract: A bread slicing machine having blade frames and blades readily removable without wrenches or other tools, clamps between the blade frames and drive mechanism for removably securing the blade frames to the drive mechanism, the clamps each comprising a T-shaped cam stud, a pivotal cam receiving the cam stud, and an actuator handle; cam-engaging members on the blade frames adjacent the cam studs and engaged by the pivotal cams, the actuator handles being shiftable to pivot the cams relative to the cam engaging members to cause the cam studs to secure or release the blade frames. The pivotal cams each have a vertical slot and a cross slot to receive the T-shaped cam stud.
    Type: Grant
    Filed: September 2, 1999
    Date of Patent: September 26, 2000
    Assignee: Oliver Products Company
    Inventor: Vance J. Matz
  • Patent number: 6109157
    Abstract: An arbor lock mechanism for use with an arbor of a table saw. The mechanism includes a bearing plate connected to the frame of the table saw and through which the arbor rotates. The mechanism also includes an arbor lock plate connected to the bearing plate and having an upper pivot hole, a central hole and a lower arcuate slot. The central hole includes a lower section through which the arbor extends and rotates and an upper section that has flat edges to secure the arbor in a locked position. The arbor lock plate includes lift portion to move the plate between an open position, where the arbor rotates, and a locked position that secures the arbor.
    Type: Grant
    Filed: June 9, 1999
    Date of Patent: August 29, 2000
    Assignee: S-B Power Tool Company
    Inventor: Mark S. Talesky
  • Patent number: 6012365
    Abstract: An apparatus for cutting, including an anvil cylinder which may have a plurality of cut rubbers strips affixed around the anvil cylinder and a cut cylinder which is mounted for rotation about an eccentric axis. Two knife boxes may be mounted on the cut cylinder, each knife box having a knife and cheekwood for securing the knife to the cut cylinder. A paper tape guides the material to be cut between the cut cylinder and the anvil cylinder. When one knife box degrades, a knife sleeve on the cut cylinder can be indexed so that the other knife box takes the place of the degraded knife box. When a cut rubber strip degrades, the anvil cylinder can be indexed so that another cut rubber strip takes the place of the degraded cut rubber strap. Either of these functions can occur while the apparatus is still running. The anvil cylinder can also use a cut rubber sleeve.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: January 11, 2000
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Charles Henry Dufour, Kevin Lauren Cote
  • Patent number: 5997454
    Abstract: A machine for cutting panels, the substantially horizontal worktable of which supports the panels and presents a lateral guide extending in a given direction; the guide supporting a carriage presenting at least one cutting member; the carriage being movable in freely-sliding manner in the aforementioned direction to cut the panels by means of a cutting member; clamping means being provided over the worktable to clamp the panels during cutting; a store containing further cutting members being provided to the side of the worktable; and a device for picking up the cutting members being provided between the carriage and the store to replace a cutting member on the carriage with a cutting member from the store.
    Type: Grant
    Filed: October 11, 1996
    Date of Patent: December 7, 1999
    Assignee: Selco S.r.l.
    Inventor: Valter Naldi
  • Patent number: 5787774
    Abstract: A method and bandsaw apparatus (30) which facilitates maintenance access to a continuous loop bandsaw blade (43) rotatably mounted thereon. The bandsaw apparatus (30) includes a base frame (31) and a cutting table (32) supported on top of the frame (31) to provide a cutting surface (33). A saw carriage assembly (37) is provided including a saw arm assembly (37) rotatably supporting the saw blade (43) which extends through a blade receiving slot (34) in the table (32). A support frame (42) movably mounted to a guide assembly (44) enables selective reciprocating movement of the saw arm assembly (40) relative the cutting table (32) so that the blade (43) can move along the receiving slot (34). A coupling device (45) of the carriage assembly (37) movably couples the saw arm assembly (40) to the support frame (42) for movement of the saw arm assembly (40) between a cutting position and a maintenance access position.
    Type: Grant
    Filed: October 3, 1997
    Date of Patent: August 4, 1998
    Assignee: HEM, Inc.
    Inventors: Mark P. Richards, Richard H. Porterfield
  • Patent number: 5526727
    Abstract: A method and bandsaw apparatus (30) which facilitates maintenance access to a continuous loop bandsaw blade (43) rotatably mounted thereon. The bandsaw apparatus (30) includes a base frame (31) and a cutting table (32) supported on top of the frame (31) to provide a cutting surface (33). A saw carriage assembly (37) is provided including a saw arm assembly (37) rotatably supporting the saw blade (43) which extends through a blade receiving slot (34) in the table (32). A support frame (42) movably mounted to a guide assembly (44) enables selective reciprocating movement of the saw arm assembly (40) relative the cutting table (32) so that the blade (43) can move along the receiving slot (34). A coupling device (45) of the carriage assembly (37) movably couples the saw arm assembly (40) to the support frame (42) for movement of the saw arm assembly (40) between a cutting position and a maintenance access position.
    Type: Grant
    Filed: October 28, 1994
    Date of Patent: June 18, 1996
    Assignee: HEM, Inc.
    Inventors: Mark P. Richards, Richard H. Porterfield
  • Patent number: 5409172
    Abstract: A knife insert for use with a knife holder of a grinder, such as a meat grinder, is adapted to be positioned within a slot formed in the knife holder. The knife insert extends outwardly from the outer end of the knife holder, and a beveled edge is formed adjacent the outer end of the knife insert. The beveled edge is adapted to be engaged by a punch, which is struck such as by a hammer to dislodge the knife insert from the knife holder when it is desired to change knife inserts. The beveled edge enables the punch to be held at an angle relative to the knife holder and the adjacent components of the grinder, to allow the punch to easily be held in place. The hammer, which is used to apply the striking force to the punch, can easily be swung clear of the components of the grinder head to facilitate easy and quick removal of the knife insert.
    Type: Grant
    Filed: September 9, 1993
    Date of Patent: April 25, 1995
    Assignee: Weiler and Company, Inc.
    Inventor: Nick J. Lesar
  • Patent number: 4862779
    Abstract: A cutter of the present invention comprises a punching member having a punching edge and a receiving member for receiving the punching force of the punching member, the receiving member having a sandwich structure comprising two plate materials and an elastic body held therebetween. Therefore, the receiving member is capable of elastically holding the punching edge during punching.
    Type: Grant
    Filed: May 18, 1988
    Date of Patent: September 5, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Mizuho Nishimura, Nobuo Watase, Yasunobu Sakaguchi, Mikio Kogane
  • Patent number: 4862782
    Abstract: A punch and die pair for turret punch presses including a punch guide with a punch holder slidable therein having a small replaceable punch insert locked axially and rotationally in the punch holder.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: September 5, 1989
    Inventor: Robert E. Ernst